com.imagero.uio.blob
Class Blob.RoBlob

java.lang.Object
  com.imagero.uio.blob.Blob
      com.imagero.uio.blob.Blob.RoBlob

Enclosing class:

Blob

public static class Blob.RoBlob

extends Blob

Nested Class Summary

Nested classes inherited from class com.imagero.uio.blob.Blob

Blob.BaBlob, Blob.IaBlob, Blob.RoBlob

Constructor Summary

Blob.RoBlob(RandomAccessInput ro, long start, long length)

Method Summary

void	clear() release reloadable resources
protected long	computeLength()
int	get(long start, byte[] dest) retrieve data from this Blob
byte[]	get(long start, int length) retrieve data from this Blob
void	set(long start, byte[] data) set data (work only if writable returns true)
boolean	writable() determine if this Blob is writable and method set(long, byte[]) can be used to change content of this Blob

Methods inherited from class com.imagero.uio.blob.Blob

getInputStream, getLength, getProperty, lengthKnown, setProperty

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Blob.RoBlob

public Blob.RoBlob(RandomAccessInput ro,
                   long start,
                   long length)

Method Detail

computeLength

protected long computeLength()

Specified by:

computeLength in class Blob

get

public byte[] get(long start,
                  int length)
           throws java.io.IOException

Description copied from class: Blob

retrieve data from this Blob

Specified by:

get in class Blob

Parameters:

start - start offset

length - how much bytes to get

Returns:

byte array with data

Throws:

java.io.IOException

get

public int get(long start,
               byte[] dest)
        throws java.io.IOException

Description copied from class: Blob

retrieve data from this Blob

Specified by:

get in class Blob

Parameters:

start - start offset

dest - where to copy data

Returns:

how much byte were copied

Throws:

java.io.IOException

writable

public boolean writable()

Description copied from class: Blob

determine if this Blob is writable and method set(long, byte[]) can be used to change content of this Blob

Specified by:

writable in class Blob

Returns:

true if Blob is writable

set

public void set(long start,
                byte[] data)
         throws java.io.IOException

Description copied from class: Blob

set data (work only if writable returns true)

Specified by:

set in class Blob

Parameters:

start - start in destination

data - new data

Throws:

java.io.IOException

clear

public void clear()

Description copied from class: Blob

release reloadable resources

Specified by:

clear in class Blob